Home / 2,847.40-3,931.86-1,801.32

Finding the Fourth Proportional to 2,847.40, 3,931.86 and 1,801.32

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Solution

The fourth proportional to 2,847.40, 3,931.86 and 1,801.32 is: 2,487.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.40 : 3,931.86 = 1,801.32 : x
  2. Step 2: Convert to fraction form
    2,847.40/3,931.86 = 1,801.32/x
  3. Step 3: Cross multiply
    2,847.40x = 3,931.86 × 1,801.32
  4. Step 4: Simplify right side
    2,847.40x = 7,082,538.06
  5. Step 5: Solve for x
    x = 7,082,538.06/2,847.40
  6. Step 6: Final answer
    x = 2,487.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.